More in Quizzes

Q. Exposed non-current-carrying metal parts of small wind electric systems, such as towers, turbine nacelles, other equipment, and conductor enclosures shall be connected to an equipment grounding conductor [in accordance with 250.134 or 250.136(A)] at what voltage level?
A. All voltage levels
B. 50V or more
C. 600V or more
D. 1,000V or more
Answer: A...More

Fill in the blanks with the appropriate answers.
Q. Where a building exceeds _______ stories, or ____ ft or more in height, overhead lines shall be arranged, where practicable to, so that a clear space (or zone) at least 6 ft wide will be left either adjacent to the buildings, or beginning not over 8 ft from them to facilitate the raising of ladders when necessary for fire fighting. Note: This relates to conductors operating at 600V or less nominal....More

Where in the NEC does it state, "completed wiring installations shall be free from short circuits, ground faults, or any connections to ground other than as required or permitted elsewhere in the Code?”...More

When installing a shielded cable or a twisted pair cable in a Class I, Division 1 location where a cable seal is required, when is it not required to remove the shielding material or separate the twisted pairs of those type cables?...More

Thermal insulation shall not be installed above a recessed luminaire or with 3 inches of the recessed luminaires' enclosure, wiring compartment, ballast, transformer, LED driver, or power supply, unless the luminaire is identified as ______ ?...More

Where more than three current-carrying conductors are installed within a raceway for electrically driven or controlled irrigation machines, the signal and control conductors of the raceway or cable shall ________....More

Where flexible metal conduit (FMC) is installed, and where flexibility is not required after installation, an equipment grounding conductor is required or is not required to be installed in a flexible metal conduit?...More

In accordance with Art. 800, optical fiber and communications cables shall be permitted to be installed in the same raceway, cable tray, enclosure, or cable routing assembly with all but which one of the options listed below?...More

When calculating the ampacity of a common neutral conductor installed as part of a circuit for an outside feeder or branch circuit, the ampacity of the common neutral conductor shall comply with which of the following?...More

When is a conduit body, such as a capped elbow or a service-entrance elbow that has sufficient size to provide free space for all conductors enclosed in it, not permitted to contain a splice, tap or device?...More

With respect to the requirements of facilities that may house children for educational, supervisory, or personal care services, a child care facility, by definition, must have more than _____ children that are _____ years old or less....More

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Designing a grounding system for industrial facilities can raise many questions along the way. The two main questions determining the final decision have generally always pertained to service continuity and single phase loads....More

Download these Frequently Asked Questions, sponsored by Westex to learn more about FR Clothing. These FAQs discuss the benefits of arc rated clothing and how NFPA 70E applies.
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The electrical industry spends hours participating in training in order to understand the revisions found in the 2014 NEC that will enhance electrical safety for our community. Electrical code revisions also serve as a significant catalyst that enables investment,...More

Are you protected in the event of short circuit fault? Stainless steel cable ties provide a durable method of bundling, identifying and fastening cable in severe and harsh conditions.
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Productivity. Reliability. Safety. We’ve Got You Covered.
The connectors and crimping process make the Panduit solution unique. Offering the speed and safety of a compression connection, while exceeding the stringent requirements of IEEE Std 837-2002. Install in ANY weather. No burn permits needed....More

Arlington's TVBU810 delivers the ultimate in versatility for installing wall-mounted TVs in new or retrofit projects. You can install it horizontally or vertically to ensure proper positioning of low voltage connections behind the TV....More